Moline, IL Climate

Summary Graph

The summary climate graph for Moline, IL shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.

Graph of average and extreme temperature ranges by day for Moline, IL.


The warmest month in Quad City International, Moline, Illinois is July with an average high temperature of 87.6°F. The hottest day on record was June 26 1988 when the temperature hit 104.0°F. During January the overnight temperature drops to an average of 13.9°F with the lowest temperature of -29.2°F being recorded on January 16 2009.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

26 Jun 1988104°F
8 Jul 2012104°F
22 Jul 1983102.9°F
2 Aug 1987102.9°F
18 Aug 1988102.9°F

The warmest months on average were:

July 201295.6°F
July 198893°F
August 198392.3°F
July 198792°F
July 200591.7°F

The coldest days on record are:

16 Jan 2009-29.2°F
3 Feb 1996-27.9°F
3 Jan 1979-27°F
5 Jan 1999-26°F
9 Feb 1979-25.1°F

The coldest months on average were:

January 1979-2.2°F
January 1977-2.1°F
January 19822.3°F
January 19783°F
February 19793.3°F


The wettest month by average rainfall in Moline, IL is August with an average of 4.7 inches of rain falling on 10 to 10 days.Although in May it typically rains on more days with 4.6 inches falling in 12 to 13 days. The driest month by average rainfall in Moline, IL is February with an average of 1.8 inches of rain falling on 5 to 6 days. Although in January it typically rains on less days with 1.9 inches falling in 5 to 6 days

Wettest Days

The wettest days on record are:

27 April 19734.3 inches
2 April 19832.4 inches
24 April 19762.2 inches
23 April 19892.1 inches
16 April 19991.6 inches

Wettest Months

The wettest months on record are:

April 197328 inches
March 197320.5 inches
January 197319.1 inches
August 198719 inches
June 199313.3 inches

Driest Months

The driest months on record are:

February 19970 inches
November 19970 inches
October 19970 inches
September 19790 inches
February 19870.1 inches